Buggy code:
public class WhileStatement extends Statement { public Expression condition ; public Statement action ; private Label breakLabel ; private Label continueLabel ; int preCondInitStateIndex = - 1 ; int condIfTrueInitStateIndex = - 1 ; int mergedInitStateIndex = - 1 ; public WhileStatement ( Expression condition , Statement action , int s , int e ) { } public FlowInfo analyseCode ( BlockScope currentScope , FlowContext flowContext , FlowInfo flowInfo ) { breakLabel = new Label ( ) ; continueLabel = new Label ( ) ; preCondInitStateIndex = currentScope . methodScope ( ) . recordInitializationStates ( flowInfo ) ; LoopingFlowContext condLoopContext ; FlowInfo postCondInfo = condition . analyseCode ( currentScope , ( condLoopContext = new LoopingFlowContext ( flowContext , this , null , null , currentScope ) ) , flowInfo ) ; LoopingFlowContext loopingContext ; if ( ( ( action ) == null ) || ( action . isEmptyBlock ( ) ) ) { condLoopContext . complainOnFinalAssignmentsInLoop ( currentScope , postCondInfo ) ; if ( ( ( condition . constant ) != ( NotAConstant ) ) && ( ( condition . constant . booleanValue ( ) ) == true ) ) { return DeadEnd ; } else { FlowInfo mergedInfo = postCondInfo . initsWhenFalse ( ) . unconditionalInits ( ) ; mergedInitStateIndex = currentScope . methodScope ( ) . recordInitializationStates ( mergedInfo ) ; return mergedInfo ; } } else { loopingContext = new LoopingFlowContext ( flowContext , this , breakLabel , continueLabel , currentScope ) ; FlowInfo actionInfo = ( ( ( condition . constant ) != ( Constant . NotAConstant ) ) && ( ( condition . constant . booleanValue ( ) ) == false ) ) ? DeadEnd : postCondInfo . initsWhenTrue ( ) . copy ( ) ; condIfTrueInitStateIndex = currentScope . methodScope ( ) . recordInitializationStates ( postCondInfo . initsWhenTrue ( ) ) ; <START_BUG> if ( ! ( actionInfo . complainIfUnreachable ( action , currentScope ) ) ) { <END_BUG> actionInfo = action . analyseCode ( currentScope , loopingContext , actionInfo ) ; } if ( ( ( actionInfo == ( DeadEnd ) ) || ( actionInfo . isFakeReachable ( ) ) ) && ( ( ( loopingContext . initsOnContinue ) == ( DeadEnd ) ) || ( loopingContext . initsOnContinue . isFakeReachable ( ) ) ) ) { continueLabel = null ; } else { condLoopContext . complainOnFinalAssignmentsInLoop ( currentScope , postCondInfo ) ; loopingContext . complainOnFinalAssignmentsInLoop ( currentScope , actionInfo ) ; } } FlowInfo mergedInfo ; if ( ( ( condition . constant ) != ( Constant . NotAConstant ) ) && ( ( condition . constant . booleanValue ( ) ) == true ) ) { mergedInitStateIndex = currentScope . methodScope ( ) . recordInitializationStates ( ( mergedInfo = loopingContext . initsOnBreak ) ) ; return mergedInfo ; } mergedInfo = postCondInfo . initsWhenFalse ( ) . unconditionalInits ( ) . mergedWith ( loopingContext . initsOnBreak ) ; mergedInitStateIndex = currentScope . methodScope ( ) . recordInitializationStates ( mergedInfo ) ; return mergedInfo ; } public void generateCode ( BlockScope currentScope , CodeStream codeStream ) { } public void resetStateForCodeGeneration ( ) { } public void resolve ( BlockScope scope ) { } public String toString ( int tab ) { } public void traverse ( IAbstractSyntaxTreeVisitor visitor , BlockScope blockScope ) { } }

Fix:
if ( ! ( actionInfo . complainIfUnreachable ( action , currentScope , false ) ) ) {